TY - RPRT TI - Two-dimensional structural modulation in epitaxial CaF2 overlayers on Si(111). AU - KG Huang AU - J Zegenhagen AU - JM Phillips AU - JR Patel PY - 1994 DO - 10.1103/physrevlett.72.2430 UR - https://pubmed.ncbi.nlm.nih.gov/10055878/ ID - 10055878 ER -